Refer to the figure above. When the demand curve for flash drives is D and the supply curve of flash drives is S1, what is the surplus in the market if the price is $7?

At the current price of a good, Al's consumer surplus equals 8, and Ben's consumer surplus equals 15. By using two-part pricing, a monopolist could increase his profit by

A) 8. B) 16. C) 15. D) 30.

A firm with two plants, A and B, has the following estimated demand and marginal cost functions:Qd = 120 - 10PMCA = 4  + (1 / 5)QAMCB = 6 + (1 / 10)QBHow should the firm allocate total output between the two plants in order to maximize profit?

A. produce 20 units in plant A, 20 units in plant B B. produce 5 units in plant A, 10 units in plant B C. produce 15 units in plant A, 10 units in plant B D. produce 20 units in plant A, 25 units in plant B E. none of the above